Half to edw



(No-Model.) v

G. SCHLEICH'ER.

ELECTRICAL BULGLAR ALARM. No. 357,416. f Patented Lieb. 8, 1887.-

(3l/@Mamas c@ @QM/tof.

45 provided with slots s', for a purpose which il'NrTED STATES PATENT OEETCE.

GUSTAV SOHLEIOHER, OF MOUNT VERNON, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, OF ONE-HALE TO BOTH OE SAME PLAGE.

EDW. G. AND JOHN O. SOHLEIOHER,

ELECTRICAL BURGLAR=ALARM- SPECIFICATION forming part of Letters Patent No. 357.416, dated February 8, 1887.

Application tiled May 17, 1886. Serial No. 202,396. (No model.)

To @ZZ whom it may concern:

le it known that I, Gusriiv ScHLEIcHEE, a cltizen of the United States of America, and a resident of Mount Vernon, in the county of Westchester and State of New York, have inyented certain new and useful Improvements 1n Electrical Burglar-Alarms, of which the following is a specification.

My invention relates to electrical burglarro alarms, and has for its object the protection 0f a structure or window to be guarded by means of a curtain or fabric, to which the mechanism for actuating the alarm is connected.

The invention consists in applying a curtain or textile fabric, provided with devices 'hereinafter to be described, to the point or place which it is desired to protect.

Figure l shows a face view of myinvention applied to a window. Fig. 2 shows a crosssection of the same. Figs. 3 and 4 show detail Views of the means for completing the circuit.

In the drawings like letters of reference `represent like parts in the several figures.

The letter F represents the window-frame, upon which is mounted suitable brackets, 'b b, 'for supporting a curtain, O, which is mounted upon rollers rr, placed in front of a window, .The lower window-roller, 1, 'is secured in position by means of plates p p,which are provided with enlarged heads e h. The plates p p are inserted in slots in the window-frameF, made for this purpose, and then rotated ninety degrees, so T as to bring the opening in the plates in line with the roller. These rollers r r are provided with pulleys p2 at regular intervals. y

The curtain may be secured in position by anyother suitable means. Y At each side of the Window I mount rollers 4o or pulleysrr. Therightfhand oneis mounted upon a spindle, s, which carries a hammer, 71 constituting one terminal of the circuit. These spindles are mounted upon metal plates which are secured to the window-frame F, and are will be hereinafter adverted to. The plate m p at the right carries an arm, upon which journals the other end of the spindle s.

The frame is suitably recessed to receive the, 5o hammer and spindle, as shown in Fig. 4.

The curtain being secured in position, as shown inl Fig. 1, a cord, c, is fastened to the roller r, through a hole, 0, and is passed al ternately over every other pulley p2, as shown, until the last one is reached, when the cord is returned to its starting position by passing over the alternating pulleys that were left previously, thus causing the cords to inter-lace, as clearly shown in Eig. 1. These cords may be placed between two curtains, or a curtain consisting of two parts, so as to be hidden from view; or they may be placed upon the face of the curtain itself. It of course makes no difference how many laces or pulleys I use, and I do not wish to confine myself to any number.

The plate p,which co-operates with thehammer h, forms the other terminal of the alarmcircuit. The hammer or circuitcloser la, instead of being operated by gravity,may be any suitable spring-actuated circuit-closer, which 7o is held away from its Contact by the friction of the cord, as in the previous case. I will now describe another device which I use in combination with the devices spoken of above. This consists of a supporting-piece S, upon which is mounted a two-part wire framework, w' w, having tongues t t, which overhang or overlap the parts w' w. The support S is made of wood, and is notched at the end so as to embrace the left-hand spindle s, and is provided with a hook, h2, at one end and a hooked arm, h a, at the other end, which engage with the slots s in the metal plate m p, before referred to. These are for the purpose of securing the support in position,and this is done by slipping the hooks into the enlarged parts of the slot and then sliding the support- S to the right, as shown in Eig. l.

One portion of the wire-work, w, is connected to one terminal of the battery through the alarm-bell a b, by way of the metallic connecn tion ofthe platemp and an arm, a,which will be spoken of hereinafter, and which connects with the frame w. The other portion of the wirework,w, is connected by means of a wire,e,with the other terminal of the battery at a point, d. Mounted on the same spindle with the hammer h is an arm, a, and provided with a curved arm, c a, having a hook or eye at each end. The lowermost one engages an extension of roo the wire-work, w, and holds the arm a in a raised position.

The letters s c represent a raised metal plate upon the window-frame, which is also connected with the other terminal of the battery at the point d. This, when the arm ct is in contact with it, forms a short circuit and rings the alarm. The two portions of the wire-work w w are insulated from each other by means of the wooden support S, and normally stand out of contact with each other, as shown in the cross-section in Fig. 2. This frame-work w w' may be made of any ornamental design.

I do not confine myself to any specic form of wire-work, as any suitable form or shape may be used, as desired. The wire-work also, instead of being mounted upon a support which is secured to the window-frame F, may be secured directly to the curtain itself. The fabric or curtain and the devices described need not necessarily be placed before a window and secured to a window-frame, but may be placed at any point where it is desired to protect or guard a structure. The several parts of my apparatus are all insulated from one another by the wood of the window-frame and the support S, and therefore need no other insulation.

Having now set forth the construction of my apparatus, I will proceed to explain how it is operated. First of all, the curtain is secured in position by means of the plate p. The support S, carrying the wire-work, is now placed in position over the curtain. The arm ais placed on the spindle to the right and made to engage the extension of the wire-work w by means of the curved arm c a, and thus hold the arm a out of contact with the raised portion of the plate s c. The pulleys r r are then placed upon the spindles s, and the cord c is passed over these pulleys, t-he end being inserted through a hole, m, and tightly drawn, and then wound about a fastening-piece, k, so as to keep all the interlacing cords taut. The

drawing of the cord taut by means of the fric-V tion on the pulley r raises the hammer hy from the plate p', and thus leaves the apparatus in its position for operation. On an attempt by any one to sever any one of the cords, the friction on the pulley r will be destroyed, and the hammer h will gravitate to the plat-ep', and thus complete the circuit and give an alarm. Should, however, any person, without cutting the curtain, press upon it, an alarm will be given by completing the circuit by means of the wire-work ww'. Should, however, any person, without resorting to any of the above measures,discover the mechanism upon the curtain and attempt to remove the same, either by sliding the support S to the left or cutting through it and the wire-work at any place, this will throw the curved arm c a out of engagement with the extension of the wire-work,

I may use the curtain with the continuous cord traversing the same without the wirework or with it, as desired. On the other hand, I may use the wire-work w w' without the continuous cord. So, too, the wire-work w w can be used without the arm a and the short circuit, as desired; but I prefer the combination shown in Fig. l.

I do not limit myself to the specific form of apparatus shown, butreserve the right to make such changes in practice as fall within the spirit of my invention.

I claiml. An electrical burglar-alarm consisting of a curtain or fabric having a continuous nonconductive cord subjected to tension traversing it, a battery, electrical connections, and an alarm held from operation by the tension of said cord.

2. In an electrical burglar-alarm, a curtain or fabric having a continuous cord traversing it, a spindle carrying ahammer or circuit-completer mounted thereupon, and a contact normally separated by the friction of said cord upon the spindle of said hammer, ay battery, an alarm, and suitable electrical connections for sending an alarm when said fabric is tampered with.

3. In an electrical burglar-alarm, a curtain or fabric having a continuous cord traversing it and passing over pulleys in the rollers upon which the curtain is mounted, and provided with means, substantially such as described, for holding the curtain in position, a spindle carrying a hammer or circuitcompleter mounted thereupon, and a contact normallyv separated by the friction of said cord upon the spindle of said hammer, a battery, an alarm, and suitable electrical connections for sending an alarm when said fabric is tampered with.

4. In an electrical burglar-alarm, a curtain or .fabric provided with means, substantially such as described, for holding it in position, a continuous cord traversing it and passing over pulleys mounted in the rollers to which the curtain is secured, a pulley at.each side ICO IIO

thereof over which the said cord passes, a del vice on one of said curtain-rollers for fastening and holding the cord taut, and a spindle carrying a hammer or circuit-completer upon which is mounted one of the latter pulleys, a contact for said hammer,from which it is separated by the friction of said cord, and a suitable electrical alarm apparatus connected therewith for giving an alarm when the aforesaid devices are disturbed.

5. A curtain or fabric having a continuous cord traversing it and a hammer or circuitcompleter mounted at one side thereof, over which support said cord is passed for frictionally separating said hammer and a contact therefor, forming` the terminals of the alarmcircuit, in combination with a two-part wire frame-work forming additional terminals of the alarmicircuit resting upon said curtain, whereby an alarm will be sounded either by cutting the said cord or by pressing upon the curtain. f

6. A curtain or fabric having a continuous cord traversing it and a hammer or circuitc'ompleter mounted at one side thereof, over which support said cord is passed for frictionally separating said hammer and a contact therefor, forming the terminals of the alarmcircuit, in combination With a support carrying a two-part Wire frame-Work forming additional terminals of the alarm-circuit 4resting upon said curtain, and an arm extending from the spindle upon which said hammer is mounted a`nd normally held from completing a short circuit by an extension of said Wire frame-work,whereby an alarm will be sounded either by cutting the said cord or by pressing upon the curtain, or by severing the support for said wire-work.

7. In an electrical burglar-alarm, a curtain or fabric and a support fastened to the structure to be guarded and carrying a two-part conducting frame-work, of wire or other su-itable conducting material, forming the terminals of a circuit and resting upon said curtain or fabric, a battery, an alarm, and suitable the terminals of a circuit which are normally out of contact, a curtain or fabric upon which it rests, suitable electrical connections for said terminals, and a battery and an alarm, whereby a signal will be given by pressure upon the curtain. f

9. In an electrical burglaralarm,a curtain or fabric and a support fastened to the structure to be guarded and carrying a two-part con ducting frame-work, of wire or other suitable conducting material, forming the terminals of a circuit and resting upon said curtain or fabric, a battery, an alarm, and suitable connections with said terminals-for giving an alarm when pressure is applied to said curtain, and an -arm mounted to one side of said curtain, tending to establish a short circuit and send an alarm, an extension of said framework for preventing the same and holding the arm away from its contact, whereby a signal will also be sent when the aforesaid snpportis disturbed, as set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 8th day of May, 1886.

y GUS-TAV SCHLEICHER. 

